Shewhart control chart

{
  "id": "MLC-T-ENV-025447",
  "term": "Shewhart control chart",
  "field": "Environment",
  "definition": "A graphical chart with statistical control limits and plotted values (for some applications in chronological order) of some measured parameter for a series of samples. Use of the charts provides a visual display of the pattern of the data, enabling the early detection of time trends and shifts in level. For maximum usefulness in control, such charts should be plotted in a timely manner (i.e., as soon as the data are available).",
  "subject": "Air",
  "references": [
    "Radon Glossary of Terms"
  ],
  "url": "https://mlchart.com/terminology/environment/shewhart-control-chart/"
}